Instagram's filters can enhance photos or add a certain hue to them, to make them look like they were taken with a Polaroid camera in the 1970s. But as smartphone cameras have improved, many users have become more sophisticated about their snapshots. Some have turned to other apps with more powerful editing tools to fix photos before posting them on Instagram.

Instagram has more than 200 million users. It was founded in 2010 and acquired by Facebook in 2012.